Robert Barclay (1648–1690) was a Scottish Quaker writer and theologian.
Robert Barclay may also refer to: Sir Robert Barclay, 8th Baronet (1755–1839), MP for Newtown, Isle of Wight 1802–1807 Robert Barclay (British Army officer) (1774–1811), British Army officer Robert Heriot Barclay (1786–1837), Royal Navy officer Robert Barclay (historiographer) (1833–1876), English ecclesiastical historiographer Sir Robert Noton Barclay (1872–1957), English export shipping merchant, banker and Liberal Party politician Robert Barclay (statistician) (1901–1973), Scottish statistician and scholar of Orkney Bobby Barclay (1906–1969), English footballer
See also Robert Berkeley (disambiguation) Robert Barclay Allardice (1779–1854), aka Robert Barclay, Scottish sportsman considered one of the founding fathers of pedestrianism Robert Barclay Fox (1873–1934), Cornish businessman Robert Barclay Academy Barclay baronets Barclay (surname)